Aims: This in-vitro study aimed to compare the fatigue deformation of Polyetheretherketone (PEEK) and Cobalt-Chromium (Co-Cr) clasps by mechanical cycling test simulating ten years of use. Materials and Methods: 72 clasps samples were fabricated on a standardized e-max upper right first premolar; it is divided into 24 Co-Cr clasps. and 48 PEEK clasps which were subdivided into two hal... https://www.markbroyard.com/mega-price-south-carolina-gamecocks-usc-gamecocks-online-great-buy/